21114042443412 has 24 divisors (see below), whose sum is σ = 49266177450336. Its totient is φ = 7038002945568.

The previous prime is 21114042443393. The next prime is 21114042443419. The reversal of 21114042443412 is 21434424041112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114042443419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10495183 + ... + 12344105.

It is an arithmetic number, because the mean of its divisors is an integer number (2052757393764).

Almost surely, 2^{21114042443412} is an apocalyptic number.

It is an amenable number.

21114042443412 is an abundant number, since it is smaller than the sum of its proper divisors (28152135006924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21114042443412 is a wasteful number, since it uses less digits than its factorization.

21114042443412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800567 (or 2800565 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 33.

Adding to 21114042443412 its reverse (21434424041112), we get a palindrome (42548466484524).

The spelling of 21114042443412 in words is "twenty-one trillion, one hundred fourteen billion, forty-two million, four hundred forty-three thousand, four hundred twelve".